The antimicrobial activity of some drugs utilized in traditional African medicine and selected on the basis of medicinal folklore reports, have been studied, within a screening program. The distribution of the antimicrobial activity among gram-positive, gram-negative bacteria, yeasts and mycoplasma is reported.
Pharmacological activities of Eschscholtzia california cham. are not yet well known. The aim of this work is to verify the pharmacological properties and to get a first identification of the active principles.
Summary
The present study was undertaken to define the effects of Trema guineense (Schum. and Thonn.) Ficalho (Ulmaceae) on some metabolic activity in the rat. A decoction of leaves, administered by gastric intubation, lowers haematic uric acid levels and increases urinary elimination of the same acid. No changes in the blood glucose and cholesterol levels were observed.
The ability of Atropa belladonna L. and atropine to produce urinary retention has been studied in the rat. Our results suggest that A. belladonna is more effective than expected on the basis of its alkaloidic content.
A reinvestigation of the roots of Guettarda platypoda afforded in addition to morronoside and sweroside isolated previously further two iridoids, loganic acid and loganin and a rare secoiridoid, secoxyloganin. The structures were elucidated by NMR techniques. This is the first report of the isolation of such compounds from G. platypoda. Some chemotaxonomic conclusion can be drawn.
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